Yes they can be used, however as Will said, the ports are slightly mis-matched. The ports in the new intake are slightly smaller than those in the OZ intake, so the mis-match isn't to bad. Mainly in the 3rd & 4th ports. With a little welding and porting, it can be rectified. In fact, I may have a couple dozen modified by my head porter, as I've had a lot of inquiries from guys in Australia.